Covers a Wide Size Range: Measures SAE 5/16" to 1" and Metric 8mm to 25mm, allowing quick identification of the most common nut and bolt sizes in both inch and millimeter systems.
Dual-Sided Markings: Features clearly engraved SAE and Metric graduations on opposite sides for fast, accurate, and error-free size reading.
Durable Alloy Steel Build: Constructed from corrosion-resistant alloy steel for long-lasting performance in garages, workshops, or outdoor job sites.
Convenient Keychain Style: Compact, lightweight design includes a sturdy keychain clip for effortless carrying on a tool pouch, keyring, or pocket.
Great for Any Application: Ideal for automotive repair, home improvement, construction, maintenance, and DIY projects, helping users save time and work more efficiently.